Ambien is a prescription medication drug with the generic name Zolpidem Tartrate. Ambien (zolpidem) is a sedative-hypnotic (sleep aid) medicine that works on brain receptors to help you fall asleep. These drugs are sometimes referred to as "sleeping pills." Ambien reduces brain activity, making it easier to fall asleep. Ambien CR is a two-layer extended-release tablet that helps you fall asleep and remain asleep. Buy Ambien Cr Without prescription is available on many online pharmacies.